Key Stuff - Module 2

Question 1

Relative isotopic mass

Answer 1

Mass compared with 1/12th mass of carbon-12

Question 2

Relative atomic mass

Answer 2

weighted mean mass compared with 1/12th mass of carbon-12

Question 3

Give formula of nitrate ion

Answer 3

NO3-

Question 4

Carbonate ion

Answer 4

CO3 2-

Question 5

Sulphate

Answer 5

SO4 2-

Question 6

Hydroxide

Answer 6

OH-

Question 7

Ammonium ion

Answer 7

NH4+

Question 8

Zinc ion

Answer 8

Zn2+

Question 9

Silver ion

Answer 9

Ag+

Question 10

Avogadro Constant

Answer 10

Number of particles per mole

Question 11

Molar mass

Answer 11

mass per mole

Question 12

Molar gas volume

Answer 12

Gas volume per mole

Question 13

Empirical formula

Answer 13

Simplest whole number ratio of atoms of each element present in a compound

Question 14

Molecular formula

Answer 14

Number + type of atoms of each element in a compound

Question 15

Average bond enthalpy

Answer 15

Measurement of covalent bond strength

Question 16

Electronegativity

Answer 16

Ability of an atom to attract the bonding pair of electrons in a covalent bond

Question 17

Name the units + how they are converted for the ideal gas equation

Answer 17

Question 18

Explain the properties ice has due to hydrogen bonding

Answer 18

Question 19

Describe what intramolecular (bonds) intermolecular (forces) are between.

Answer 19

• Intra (bonds) bt/w atoms
• Inter (forces) bt/w molecules

Question 20

Acid + hydrogencarbonate

Answer 20

• Salt
• Water
• CO2

Question 21

Metal + acid

Answer 21

• Metal salt
• Hydrogen

MASH

Question 22

Acid + carbonate

Answer 22

• Salt
• Water
• CO2

Question 23

Acid + base

Metal hydroxide

Answer 23

• Salt
• Water

Question 24

Metal + water

Answer 24

• Metal hydroxide
• Hydrogen

Question 25

Metal Oxide + acid

Answer 25

- Salt - Water

Question 26

Define sigma bond

Answer 26

Overlaping of orbitals bt/w atoms

Question 27

Define Pi bond

Answer 27

Sideways overlapping of p orbitals

Question 28

What is the difference bt/w a base + alkali

Answer 28

- Base: proton acceptor - Alkali: base which dissolves in water + releases hydroxide ions